// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library http_parser.http_date_test;

import 'package:http_parser/http_parser.dart';
import 'package:unittest/unittest.dart';

void main() {
  group('format', () {
    test('many values with 9', () {
      var date = new DateTime.utc(2014, 9, 9, 9, 9, 9);
      var formatted = formatHttpDate(date);

      expect(formatted, 'Tue, 09 Sep 2014 09:09:09 GMT');
      var parsed = parseHttpDate(formatted);

      expect(parsed, date);
    });

    test('end of year', () {
      var date = new DateTime.utc(1999, 12, 31, 23, 59, 59);
      var formatted = formatHttpDate(date);

      expect(formatted, 'Fri, 31 Dec 1999 23:59:59 GMT');
      var parsed = parseHttpDate(formatted);

      expect(parsed, date);
    });

    test('start of year', () {
      var date = new DateTime.utc(2000, 1, 1, 0, 0, 0);
      var formatted = formatHttpDate(date);

      expect(formatted, 'Sat, 01 Jan 2000 00:00:00 GMT');
      var parsed = parseHttpDate(formatted);

      expect(parsed, date);
    });
  });

  group("parse", () {
    group("RFC 1123", () {
      test("parses the example date", () {
        var date = parseHttpDate("Sun, 06 Nov 1994 08:49:37 GMT");
        expect(date.day, equals(6));
        expect(date.month, equals(DateTime.NOVEMBER));
        expect(date.year, equals(1994));
        expect(date.hour, equals(8));
        expect(date.minute, equals(49));
        expect(date.second, equals(37));
        expect(date.timeZoneName, equals("UTC"));
      });

      test("whitespace is required", () {
        expect(() => parseHttpDate("Sun,06 Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 199408:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:49:37GMT"),
            throwsFormatException);
      });

      test("exactly one space is required", () {
        expect(() => parseHttpDate("Sun,  06 Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06  Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov  1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994  08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:49:37  GMT"),
            throwsFormatException);
      });

      test("requires precise number lengths", () {
        expect(() => parseHttpDate("Sun, 6 Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 8:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:9:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:49:7 GMT"),
            throwsFormatException);
      });

      test("requires reasonable numbers", () {
        expect(() => parseHttpDate("Sun, 00 Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 31 Nov 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 32 Aug 1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 24:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:60:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun, 06 Nov 1994 08:49:60 GMT"),
            throwsFormatException);
      });

      test("only allows short weekday names", () {
        expect(() => parseHttpDate("Sunday, 6 Nov 1994 08:49:37 GMT"),
            throwsFormatException);
      });

      test("only allows short month names", () {
        expect(() => parseHttpDate("Sun, 6 November 1994 08:49:37 GMT"),
            throwsFormatException);
      });

      test("only allows GMT", () {
        expect(() => parseHttpDate("Sun, 6 Nov 1994 08:49:37 PST"),
            throwsFormatException);
      });

      test("disallows trailing whitespace", () {
        expect(() => parseHttpDate("Sun, 6 Nov 1994 08:49:37 GMT "),
            throwsFormatException);
      });
    });

    group("RFC 850", () {
      test("parses the example date", () {
        var date = parseHttpDate("Sunday, 06-Nov-94 08:49:37 GMT");
        expect(date.day, equals(6));
        expect(date.month, equals(DateTime.NOVEMBER));
        expect(date.year, equals(1994));
        expect(date.hour, equals(8));
        expect(date.minute, equals(49));
        expect(date.second, equals(37));
        expect(date.timeZoneName, equals("UTC"));
      });

      test("whitespace is required", () {
        expect(() => parseHttpDate("Sunday,06-Nov-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-9408:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:49:37GMT"),
            throwsFormatException);
      });

      test("exactly one space is required", () {
        expect(() => parseHttpDate("Sunday,  06-Nov-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94  08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:49:37  GMT"),
            throwsFormatException);
      });

      test("requires precise number lengths", () {
        expect(() => parseHttpDate("Sunday, 6-Nov-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-1994 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 8:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:9:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:49:7 GMT"),
            throwsFormatException);
      });

      test("requires reasonable numbers", () {
        expect(() => parseHttpDate("Sunday, 00-Nov-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 31-Nov-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 32-Aug-94 08:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 24:49:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:60:37 GMT"),
            throwsFormatException);

        expect(() => parseHttpDate("Sunday, 06-Nov-94 08:49:60 GMT"),
            throwsFormatException);
      });

      test("only allows long weekday names", () {
        expect(() => parseHttpDate("Sun, 6-Nov-94 08:49:37 GMT"),
            throwsFormatException);
      });

      test("only allows short month names", () {
        expect(() => parseHttpDate("Sunday, 6-November-94 08:49:37 GMT"),
            throwsFormatException);
      });

      test("only allows GMT", () {
        expect(() => parseHttpDate("Sunday, 6-Nov-94 08:49:37 PST"),
            throwsFormatException);
      });

      test("disallows trailing whitespace", () {
        expect(() => parseHttpDate("Sunday, 6-Nov-94 08:49:37 GMT "),
            throwsFormatException);
      });
    });

    group("asctime()", () {
      test("parses the example date", () {
        var date = parseHttpDate("Sun Nov  6 08:49:37 1994");
        expect(date.day, equals(6));
        expect(date.month, equals(DateTime.NOVEMBER));
        expect(date.year, equals(1994));
        expect(date.hour, equals(8));
        expect(date.minute, equals(49));
        expect(date.second, equals(37));
        expect(date.timeZoneName, equals("UTC"));
      });

      test("parses a date with a two-digit day", () {
        var date = parseHttpDate("Sun Nov 16 08:49:37 1994");
        expect(date.day, equals(16));
        expect(date.month, equals(DateTime.NOVEMBER));
        expect(date.year, equals(1994));
        expect(date.hour, equals(8));
        expect(date.minute, equals(49));
        expect(date.second, equals(37));
        expect(date.timeZoneName, equals("UTC"));
      });

      test("whitespace is required", () {
        expect(() => parseHttpDate("SunNov  6 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov6 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  608:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:49:371994"),
            throwsFormatException);
      });

      test("the right amount of whitespace is required", () {
        expect(() => parseHttpDate("Sun  Nov  6 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov   6 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov 6 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6  08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:49:37  1994"),
            throwsFormatException);
      });

      test("requires precise number lengths", () {
        expect(() => parseHttpDate("Sun Nov 016 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 8:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:9:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:49:7 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:49:37 94"),
            throwsFormatException);
      });

      test("requires reasonable numbers", () {
        expect(() => parseHttpDate("Sun Nov 0 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov 31 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Aug 32 08:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 24:49:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:60:37 1994"),
            throwsFormatException);

        expect(() => parseHttpDate("Sun Nov  6 08:49:60 1994"),
            throwsFormatException);
      });

      test("only allows short weekday names", () {
        expect(() => parseHttpDate("Sunday Nov 0 08:49:37 1994"),
            throwsFormatException);
      });

      test("only allows short month names", () {
        expect(() => parseHttpDate("Sun November 0 08:49:37 1994"),
            throwsFormatException);
      });

      test("disallows trailing whitespace", () {
        expect(() => parseHttpDate("Sun November 0 08:49:37 1994 "),
            throwsFormatException);
      });
    });
  });
}
